NAME

LIBRARY

SYNOPSIS

[Digital] The following function is supported in order to maintain backward compatibility
with previous versions of the operating system.
int setprotoent_r(
int stay_open,struct protoent_data *proto_data);

The following definition of the setprotoent() function does not
conform to current standards and is supported only for backward compatibility
(see standards(5)):

int setprotoent(
int stay_open);

STANDARDS

Interfaces documented on this reference page conform to industry
standards as follows:

setprotoent(): XPG4-UNIX

Refer to the standards(5) reference page for more information
about industry standards and associated tags.

PARAMETERS

Indicates when to close the protocols file. Specifying a value of 0 (zero)
causes the file to be closed after each call to the setprotoent()
function. Specifying a nonzero value allows the protocols file to remain
open after each function.
[Digital] For setprotoent_r() only, this points at a structure where
setprotoent_r() stores information about the protocols file.

DESCRIPTION

The setprotoent() (set protocol entry) function opens
either the local /etc/protocols file or the NIS distributed protocols
file and sets the file marker to the beginning of the file. To determine which
file or files to search, and in which order, the system uses the switches in
the /etc/svc.conf file.

NOTES

[Digital] The setprotoent_r() function is the reentrant version of
the setprotoent() function. It is supported in order to maintain backward
compatibility with previous versions of the operating system. Upon successful
completion, the setprotoent_r() function returns a value of 0 (zero).
Otherwise, it returns a value of -1.

[Digital] Note that before calling the
setprotoent_r() function for the first time, you must zero-fill
the protoent_data structure. The netdb.h header file defines the
protoent_data structure.

RETURN VALUES

[Digital] Upon successful completion, the version of setprotoent()
provided for backward compatibility returns a value of 1. Otherwise, it
returns a value of 0 (zero).

ERRORS

Current industry standards do not define error values for the
setprotoent() function.

[Digital] If any of the following conditions occurs, the setprotoent_r()
function sets errno to the corresponding value:
The proto_data parameter is invalid.

In addition, the setprotoent(), backward compatible
version of setprotoent(), and setprotoent_r() functions can
fail to open the file. In this case, errno will be set to the failure.

FILES

Contains the protocol names.
The database service selection configuration file.